The Honeywell 5820L is a slimline, wireless door and window contact transmitter that is nearly half the size of standard door/window transmitters. It is ideal for casement and double-hung windows. The 5820L provides a single zone of protection, and installs easily on doors or windows with the included mounting hardware or double-sided adhesive tape.
New sleek design (nearly half the size of competitors)
Easy-to-open case requires no special tools
Transmits supervisory, tamper and low battery messages